<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>表格边框</title>
</head>
<body>
<h4>带有普通的边框：</h4>
<table border="1">
  <tr>
    <td>First</td>
    <td>Row</td>
  </tr>
  <tr>
    <td>Second</td>
    <td>Row</td>
  </tr>
</table>

<h4>带有粗的边框：</h4>
<table border="8">
  <tr>
    <td>First</td>
    <td>Row</td>
  </tr>
  <tr>
    <td>Second</td>
    <td>Row</td>
  </tr>
</table>

<h4>带有很粗的边框：</h4>
<table border="15">
  <tr>
    <td>First</td>
    <td>Row</td>
  </tr>
  <tr>
    <td>Second</td>
    <td>Row</td>
  </tr>
</table>
</body>
</html>